MB to kB Image Compressor

Add the image, type the required number, leave the unit on kB and press Compress. The tool searches quality settings and, when needed, reduces the pixel dimensions until it finds the best result at or below your target.

Yes. Enter 100 kB and the result will land at or just below the limit. It may be a few kilobytes smaller because the encoder works in discrete steps and keeps a safety margin for portals that count kilobytes differently.

No. Decoding, resizing, compression and ZIP creation all run in your browser on your device. We do not receive the image, store a copy or ask you to create an account.

Current browsers handle JPG, JPEG, PNG, WebP, GIF and BMP input. HEIC and HEIF work only where the browser can decode them, commonly Safari on Apple devices; another browser may ask you to convert them first.

Choose JPG for government, exam and recruitment portals unless their instructions say otherwise. Pick WebP for a website you control, and keep PNG for logos, screenshots or transparency when exact pixels matter more than reaching a tiny size.

A sensible target usually looks unchanged at normal viewing size. Very small limits require fewer pixels, so inspect the eyes, signature strokes or smallest text with the comparison slider and raise the target if the destination allows more room.

The original dimensions needed more bytes than your target could support without severe artefacts. The tool reduces them in steps before quality falls too far, because a slightly smaller clean image looks better than a full-size blocky one.

Yes. Select the option that keeps original dimensions, but understand that a very low target may then be impossible or visibly rough. If a form gives exact pixels, use the exact resize option instead.

Adding bytes does not restore detail and can introduce new JPEG artefacts, so the tool returns the smaller original unchanged. If a portal also has a minimum size, start from the higher-quality original or rescan it rather than padding a tiny file.

Yes. The bulk compressor accepts up to 200 images in one batch, applies the same target, format and optional longest-side cap to each, and packages the finished files into a ZIP in your browser.

Re-encoding from the decoded pixels normally drops EXIF metadata such as camera model and GPS coordinates. The visible orientation is applied before saving, so a phone photo should still come out upright.

Try allowing dimensions to change, select JPG or WebP instead of PNG, crop away unused background, or raise the target. Some combinations — especially a large lossless PNG at a tiny limit — cannot be made both exact and useful.